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Started to add code for CQ creation
This commit is contained in:
Michael Brown
parent
156b409ccc
commit
5a43293c38
@ -85,6 +85,12 @@ union arbelprm_doorbell_register {
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*
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*/
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/** Arbel device limits */
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struct arbel_dev_limits {
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/** Number of reserved CQs */
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unsigned long reserved_cqs;
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};
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/** Alignment of Arbel send work queue entries */
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#define ARBEL_SEND_WQE_ALIGN 128
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@ -129,6 +135,12 @@ struct arbel_queue_pair {
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struct arbel_recv_work_queue recv;
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};
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/** Maximum number of allocatable completion queues
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*
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* This is a policy decision, not a device limit.
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*/
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#define ARBEL_MAX_CQS 8
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/** An Arbel completion queue */
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struct arbel_completion_queue {
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/** Infiniband completion queue */
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@ -139,6 +151,14 @@ struct arbel_completion_queue {
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union arbelprm_completion_entry *cqe;
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};
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/** An Arbel resource bitmask */
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typedef uint32_t arbel_bitmask_t;
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/** Size of an Arbel resource bitmask */
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#define ARBEL_BITMASK_SIZE(max_entries) \
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( ( (max_entries) + ( 8 * sizeof ( arbel_bitmask_t ) ) - 1 ) / \
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( 8 * sizeof ( arbel_bitmask_t ) ) )
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/** An Arbel device */
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struct arbel {
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/** Configuration registers */
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@ -157,7 +177,12 @@ struct arbel {
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* Used to get unrestricted memory access.
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*/
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unsigned long reserved_lkey;
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/** Completion queue in-use bitmask */
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arbel_bitmask_t cq_inuse[ ARBEL_BITMASK_SIZE ( ARBEL_MAX_CQS ) ];
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/** Device limits */
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struct arbel_dev_limits limits;
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};
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/*
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@ -203,4 +228,64 @@ struct arbel {
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#define ARBEL_HCR_OUT_CMD( _opcode, _out_mbox, _out_len ) \
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ARBEL_HCR_CMD ( _opcode, 0, 0, _out_mbox, _out_len )
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/*
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* Doorbell record allocation
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*
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* The doorbell record map looks like:
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*
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* ARBEL_MAX_CQS * Arm completion queue doorbell
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* ARBEL_MAX_QPS * Send work request doorbell
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* Group separator
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* ...(empty space)...
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* ARBEL_MAX_QPS * Receive work request doorbell
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* ARBEL_MAX_CQS * Completion queue consumer counter update doorbell
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*/
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#define ARBEL_MAX_DOORBELL_RECORDS 512
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#define ARBEL_GROUP_SEPARATOR_DOORBELL ( ARBEL_MAX_CQS + ARBEL_MAX_QPS )
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/**
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* Get arm completion queue doorbell index
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*
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* @v cqn_offset Completion queue number offset
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* @ret doorbell_idx Doorbell index
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*/
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static inline unsigned int
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arbel_arm_cq_doorbell_idx ( unsigned int cqn_offset ) {
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return cqn_offset;
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}
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/**
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* Get send work request doorbell index
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*
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* @v qpn_offset Queue pair number offset
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* @ret doorbell_idx Doorbell index
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*/
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static inline unsigned int
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arbel_send_doorbell_idx ( unsigned int qpn_offset ) {
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return ( ARBEL_MAX_CQS + qpn_offset );
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}
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/**
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* Get receive work request doorbell index
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*
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* @v qpn_offset Queue pair number offset
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* @ret doorbell_idx Doorbell index
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*/
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static inline unsigned int
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arbel_recv_doorbell_idx ( unsigned int qpn_offset ) {
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return ( ARBEL_MAX_DOORBELL_RECORDS - ARBEL_MAX_CQS - qpn_offset - 1 );
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}
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/**
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* Get commpletion queue consumer counter doorbell index
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*
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* @v cqn_offset Completion queue number offset
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* @ret doorbell_idx Doorbell index
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*/
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static inline unsigned int
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arbel_cq_ci_doorbell_idx ( unsigned int cqn_offset ) {
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return ( ARBEL_MAX_DOORBELL_RECORDS - cqn_offset - 1 );
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}
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#endif /* _ARBEL_H */
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@ -12,6 +12,7 @@ Skeleton NIC driver for Etherboot
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#include <errno.h>
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#include <gpxe/pci.h>
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#include <gpxe/malloc.h>
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#include <gpxe/iobuf.h>
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#include <gpxe/netdevice.h>
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#include <gpxe/infiniband.h>
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@ -266,6 +267,50 @@ static struct net_device_operations mlx_operations = {
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.irq = mlx_irq,
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};
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/**
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* Allocate queue number
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*
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* @v q_inuse Queue usage bitmask
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* @v max_inuse Maximum number of in-use queues
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* @ret qn_offset Free queue number offset, or negative error
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*/
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static int arbel_alloc_qn_offset ( arbel_bitmask_t *q_inuse,
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unsigned int max_inuse ) {
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unsigned int qn_offset = 0;
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arbel_bitmask_t mask = 1;
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while ( qn_offset < max_inuse ) {
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if ( ( mask & *q_inuse ) == 0 ) {
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*q_inuse |= mask;
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return qn_offset;
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}
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qn_offset++;
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mask <<= 1;
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if ( ! mask ) {
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mask = 1;
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q_inuse++;
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}
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}
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return -ENFILE;
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}
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/**
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* Free queue number
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*
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* @v q_inuse Queue usage bitmask
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* @v qn_offset Queue number offset
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*/
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static void arbel_free_qn_offset ( arbel_bitmask_t *q_inuse, int qn_offset ) {
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arbel_bitmask_t mask;
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mask = ( 1 << ( qn_offset % ( 8 * sizeof ( mask ) ) ) );
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q_inuse += ( qn_offset / ( 8 * sizeof ( mask ) ) );
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*q_inuse &= ~mask;
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}
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/***************************************************************************
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*
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* HCA commands
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@ -412,22 +457,78 @@ arbel_cmd_sw2hw_cq ( struct arbel *arbel, unsigned long cqn,
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* @v ibdev Infiniband device
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* @v
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*/
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static int arbel_create_cq ( struct ib_device *ibdev,
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static int arbel_create_cq ( struct ib_device *ibdev, unsigned int num_cqes,
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struct ib_completion_queue **new_cq ) {
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struct arbel *arbel = ibdev->priv;
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struct arbel_completion_queue *arbel_cq;
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struct arbelprm_completion_queue_context cqctx;
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struct ib_completion_queue *cq;
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int cqn_offset;
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unsigned int cqn;
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size_t cqe_size;
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unsigned int i;
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int rc;
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cq = zalloc ( sizeof ( *cq ) );
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if ( ! cq )
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return -ENOMEM;
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/* Find a free completion queue number */
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cqn_offset = arbel_alloc_qn_offset ( arbel->cq_inuse, ARBEL_MAX_CQS );
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if ( cqn_offset < 0 ) {
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rc = cqn_offset;
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goto err_cqn_offset;
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}
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cqn = ( arbel->limits.reserved_cqs + cqn_offset );
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/* Allocate control structures */
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arbel_cq = zalloc ( sizeof ( *arbel_cq ) );
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if ( ! arbel_cq ) {
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rc = -ENOMEM;
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goto err_arbel_cq;
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}
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arbel_cq->cq.cqn = cqn;
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arbel_cq->cq.num_cqes = num_cqes;
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INIT_LIST_HEAD ( &arbel_cq->cq.work_queues );
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arbel_cq->doorbell_idx = arbel_cq_ci_doorbell_idx ( cqn_offset );
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/* Allocate completion queue itself */
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cqe_size = ( num_cqes * sizeof ( arbel_cq->cqe[0] ) );
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arbel_cq->cqe = malloc_dma ( cqe_size, sizeof ( arbel_cq->cqe[0] ) );
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if ( ! arbel_cq->cqe ) {
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rc = -ENOMEM;
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goto err_cqe;
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}
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memset ( arbel_cq->cqe, 0, cqe_size );
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for ( i = 0 ; i < num_cqes ; i++ ) {
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MLX_FILL_1 ( &arbel_cq->cqe[i].normal, 7, owner, 1 );
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}
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barrier();
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/* Initialise doorbell records */
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// ...
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/* Hand queue over to hardware */
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memset ( &cqctx, 0, sizeof ( cqctx ) );
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MLX_FILL_1 ( &cqctx, 0, st, 0xa /* "Event fired" */ );
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MLX_FILL_1 ( &cqctx, 2, start_address_l,
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virt_to_bus ( arbel_cq->cqe ) );
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/// ....
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return arbel_cmd_sw2hw_cq ( arbel, 0, &cqctx );
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if ( ( rc = arbel_cmd_sw2hw_cq ( arbel, cqn, &cqctx ) ) != 0 ) {
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// ...
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}
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// completion queue number
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// doorbell index
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*new_cq = &arbel_cq->cq;
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return 0;
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err_cqe:
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free ( arbel_cq );
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err_arbel_cq:
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arbel_free_qn_offset ( arbel->cq_inuse, cqn_offset );
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err_cqn_offset:
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return rc;
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}
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@ -764,6 +865,8 @@ static void arbel_remove ( struct pci_device *pci ) {
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static int arbel_probe ( struct pci_device *pci,
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const struct pci_device_id *id __unused ) {
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struct net_device *netdev;
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struct arbelprm_query_dev_lim dev_lim;
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struct arbel *arbel = &static_arbel;
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struct mlx_nic *mlx;
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struct ib_mac *mac;
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udqp_t qph;
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@ -815,12 +918,14 @@ static int arbel_probe ( struct pci_device *pci,
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list_add ( &static_ipoib_qp.qp.recv.list,
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&static_ipoib_recv_cq.cq.work_queues );
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struct arbelprm_query_dev_lim dev_lim;
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memset ( &dev_lim, 0xaa, sizeof ( dev_lim ) );
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if ( ( rc = arbel_cmd_query_dev_lim ( &static_arbel,
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&dev_lim ) ) != 0 ) {
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DBG ( "QUERY_DEV_LIM failed: %s\n", strerror ( rc ) );
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/* Get device limits */
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if ( ( rc = arbel_cmd_query_dev_lim ( arbel, &dev_lim ) ) != 0 ) {
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DBGC ( arbel, "Arbel %p could not get device limits: %s\n",
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arbel, strerror ( rc ) );
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goto err_query_dev_lim;
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}
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arbel->limits.reserved_cqs =
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( 1 << MLX_GET ( &dev_lim, log2_rsvd_cqs ) );
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DBG ( "Device limits:\n ");
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DBG_HD ( &dev_lim, sizeof ( dev_lim ) );
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@ -830,6 +935,7 @@ static int arbel_probe ( struct pci_device *pci,
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return 0;
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err_query_dev_lim:
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err_register_netdev:
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err_ipoib_init:
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ib_driver_close ( 0 );
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@ -146,10 +146,10 @@
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/* uar context indexes */
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enum {
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MADS_RCV_CQ_ARM_DB_IDX,
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MADS_SND_CQ_ARM_DB_IDX,
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IPOIB_RCV_CQ_ARM_DB_IDX,
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MADS_RCV_CQ_ARM_DB_IDX,
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IPOIB_SND_CQ_ARM_DB_IDX,
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IPOIB_RCV_CQ_ARM_DB_IDX,
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MADS_SND_QP_DB_IDX,
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IPOIB_SND_QP_DB_IDX,
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GROUP_SEP_IDX,
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@ -158,12 +158,12 @@ enum {
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unmapped doorbell records
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-------------------------- */
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END_UNMAPPED_DB_IDX = 505,
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MADS_RCV_QP_DB_IDX = 506,
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IPOIB_RCV_QP_DB_IDX = 507,
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MADS_RCV_CQ_CI_DB_IDX = 508,
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MADS_SND_CQ_CI_DB_IDX = 509,
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IPOIB_RCV_CQ_CI_DB_IDX = 510,
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IPOIB_SND_CQ_CI_DB_IDX = 511
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IPOIB_RCV_QP_DB_IDX = 506,
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MADS_RCV_QP_DB_IDX = 507,
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IPOIB_RCV_CQ_CI_DB_IDX = 508,
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IPOIB_SND_CQ_CI_DB_IDX = 509,
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MADS_RCV_CQ_CI_DB_IDX = 510,
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MADS_SND_CQ_CI_DB_IDX = 511,
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};
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/* uar resources types */
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